// -------------------------------------------------
// BlinKit - BlinKit Library
// -------------------------------------------------
//   File Name: AnimatableFilterOperations.cpp
// Description: AnimatableFilterOperations Class
//      Author: Ziming Li
//     Created: 2021-07-17
// -------------------------------------------------
// Copyright (C) 2021 MingYang Software Technology.
// -------------------------------------------------

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "core/animation/animatable/AnimatableFilterOperations.h"

#include <algorithm>

namespace blink {

bool AnimatableFilterOperations::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
    const AnimatableFilterOperations* target = toAnimatableFilterOperations(value);
    return !operations().canInterpolateWith(target->operations());
}

PassRefPtr<AnimatableValue> AnimatableFilterOperations::interpolateTo(const AnimatableValue* value, double fraction) const
{
    if (usesDefaultInterpolationWith(value))
        return defaultInterpolateTo(this, value, fraction);

    const AnimatableFilterOperations* target = toAnimatableFilterOperations(value);
    FilterOperations result;
    size_t fromSize = operations().size();
    size_t toSize = target->operations().size();
    size_t size = std::max(fromSize, toSize);
    for (size_t i = 0; i < size; i++) {
#if ENABLE(OILPAN)
        FilterOperation* from = (i < fromSize) ? m_operationWrapper->operations().operations()[i].get() : 0;
        FilterOperation* to = (i < toSize) ? target->m_operationWrapper->operations().operations()[i].get() : 0;
#else
        FilterOperation* from = (i < fromSize) ? m_operations.operations()[i].get() : 0;
        FilterOperation* to = (i < toSize) ? target->m_operations.operations()[i].get() : 0;
#endif
        GCRefPtr<FilterOperation> blendedOp = FilterOperation::blend(from, to, fraction);
        if (blendedOp)
            result.operations().emplace_back(blendedOp);
        else
            ASSERT_NOT_REACHED();
    }
    return AnimatableFilterOperations::create(result);
}

bool AnimatableFilterOperations::equalTo(const AnimatableValue* value) const
{
    return operations() == toAnimatableFilterOperations(value)->operations();
}

} // namespace blink
